udev: guard REREADP logic with open(O_ECXL)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 763062f219..d79891a7ca 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -754,7 +754,7 @@ static int synthesize_change(struct udev_device *dev) {
                  * The kernel will send out a change event for the disk, and
                  * "remove/add" for all partitions.
                  */
-                fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);
+                fd = open(udev_device_get_devnode(dev), O_RDONLY|O_EXCL|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);
                 if (fd >= 0) {
                         r = ioctl(fd, BLKRRPART, 0);
                         close(fd);